def test_append():
    linked_list = SinglyLinkedList()
    linked_list.append(4)
    linked_list.append(5)
    assert linked_list.size() == 2
    assert linked_list.get(0) == 4
    assert linked_list.get(1) == 5
def get_multi_node_list() -> SinglyLinkedList:
    multi_node_list = SinglyLinkedList()
    multi_node_list.append(1)
    multi_node_list.append(2)
    multi_node_list.append(3)
    return multi_node_list
def test_size():
    assert SinglyLinkedList().size() == 0
    linked_list = SinglyLinkedList()
    linked_list.append(1)
    assert linked_list.size() == 1
    assert get_multi_node_list().size() == 3
def test_append_empty():
    linked_list = SinglyLinkedList()
    linked_list.append(1)
    assert linked_list.size() == 1
    assert linked_list.get(0) == 1